^\s*[)]*\s*$

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and 

^\s*[(]*\s*$

[download]

matches the brackets `(` and `)` which commented as matched. That is, what am trying is to ignore brackets that are single and not (condition1) brackets.. i want to regex to match the brackets which are commented as not matched.. ie 1 or more brackets on the same line.. 

    while
       (    #matches here
         (  #matches here
          (condition1) && (condition2) && 
           condition3 
        ) || 
        (#matches here
          (condition4) || 
           condition5 && 
           (condition6) 
         ) #matches here

      ) #matches here

[download]

but if I have like this it does not match: 

    while
     (( #does not match here
          (condition1) && (condition2) && 
           condition3 
        ) || 
        (
          (condition4) || 
           condition5 && 
           (condition6) 
         ) ) #does not match here

[download]

or 

    while
     ((( #does not match here
          (condition1) && (condition2) && 
           condition3 
        )) || 
        ((  #does not match here
          (condition4) || 
           condition5 && 
           (condition6) 
         ) ) ) #does not match here

[download]

How can I match all the brackets that are single?

In reply to doubt on regex by loki

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